Washing machine



.lune 6, 1939.

G. W. DUNHAM WASHING MACHINE original F115@ April 2, 193s 4 sheets-sheet1 oobooo ooQoppn fwd' Inyeht OTS mi w. aA e H mw June 6, 1939. G, wDUHAM 2,161,618

WASHING MACHINE Original Filed April 2, 1935 4 Sheets-Sheet 2 nga.

ITA'LVGOP Geogew DLmhcLrn,V

His Attobneg.

Jun.6,1939.- G.w.DUNHAM l2,161,618

'WASHING MACHINE Original Filed April 2, 19354 4 Sheets-Sheet 3GeovgeWDunhum 71 i Attorney.

4 June 6,;1939. l G. w. DUNHAIM 2,161,618

' WASHING. MACH-fm:

original Filed April 2, 1955 -4 she's-sheef`r 4 His Attowneg.

Patented June 6, 1939 OFFICE WASHING MACHINE V George W. Dunham,Westport, Conn., assignor to General Electric Com New York pany, acorporation of Application April 2, 1935,'ser1a1'No. 14,255 RenewedJanuary 10, 1939 32 Claims. (Cl. 68-23) My invention relates to washingmachines of the type in ,which washing is eifected by the oscillation ofan agitating element in a tub, and

in which the tub is subsequently rotated to centrifugally extract theliquid from the material washed, thereby washing tub.

The vobject of my invention is to provide an improved construction andarrangement in a l Washing machine of this type. For a consideration ofwhat I believe to be novel and my invention, attention is directed tothe accompanying description and the claims appended thereto.

'In the accompanying drawings, Fig. 1 is a sectional elevation of awashing machine embodying my invention; Fig. 2 is a sectional plan viewtaken on line 2 2 of Fig. 1; Fig. 3 is a perspective view of the controlfor the washing machine with the outer casing and base broken away;

Fig. 4 is a sectional plan view of the driving mechanism for thewashingmachine; Fig. 5 is a sectional elevation taken on line 5 5 ofFig. 3; Fig. 6 is'a sectional elevation taken on line 6 6 of Fig. 4;Fig. 'I is a sectional elevation taken on line 1 1 of Fig. 4 Fig. 8 is asectional elevation taken on line 8 8 of Fig. 4; Fig. 9 is a sectionalplan view taken on line 9 9 of Fig. '1;

Fig. 10 is a plan view of the'brake for retarding Y control cams in thepumping position; Fig. 16

is a diagrammatic view showing the control cams in the off position; andFig. 1'1 is a diagrammatic view showing the control cams in the dryingor extracting position.

Referring to the drawings, the washing machine embodying my inventioncomprises a base I having a depending flange 2 to which are secured theupper ends of supporting legs 3. The lower ends of the supporting legsare secured to a ring 4 on which are carried casters 5. A cylindricalskirt 6 having its upper end extend'- ing above the base is secured tothe 'outside of thering 4. Supported on the upper side of the base is astationary tub 1 which provides the outer casing for the machine. Thelower end of the tub extends within the skirt 6. The tub and the baseare provided with a central openand drying in`a single ing through whichextends a, vertical sleeve- 8 having a flange 9 on the under side of thebase. On the inside of the sleeve 8 is a resilient mounting forthellower end of a vertical sleeve III. This mounting comprises a rubberring II, which lies between an inwardly extending flange I2 on thesleeve 8 and the lower side of a flange I3 on a sleeve I'3a secured tothe-sleeve I0; and a lrubber ring I4 which surrounds a sleeve Ilasecured to sleeve I0 and rests on the upper side of the flange I3. Therubber rings are held in place by'a nut I5 which is threaded'into theinside of the sleeve 8 and which bears against the upper edge of thering Il. The rubber rings provide a resilient Y support for the lowerend of the sleeve II) which permits tilting movement of the sleeve.'I'he stiffness of the mounting may be adjusted by threading the nut I5into or out of the sleeve 8. Leakage of liquid around the sleeve III isprevented by a rubber sleeve I5 having its upper end securedto thesleeve I0 by a clamp I1 and having its lower end extending under aclamping ring I8. 'Screws I9.extendingfrom the clamping ringA I8 throughthe adjacent walls of the tub and the base and threaded into the flange9 clamp the lower end of the sleeve I6 to the upper side of the tub andalsoclamp the tub to the base. Suitable gaskets are arranged between thetub and the base and between the base and the flange 9 to preventleakage.

The sleeve Ill extends above the normal water level in the' tub 1.Extending through the sleeve I0 and spaced therefrom is a vertical shaft20. I'he upper end of the shaft is journaled in a self-lubricatingsleeve. bearing 2I which is fixed to the inside of the sleeve. There isno bearing for the lower end of the shaft.

In the upper part of stationary tub 1 is a rotatable tub or receptacle22 for receiving liquid and material'to be washed. The space between thebottom of the receptacle 22 and the bottom of the tub 1 is sufficient toprovide a storage space for 'all the liquid which can be placed in thereceptacle. At the center of the receptacle 22 is-a vertical sleeve 23,the upper end of which projects above the water level in the receptacle.The lower end of the sleeve 23 fits into an opening in the bottom wallof the receptacle 22 and a stffening disk 25, both of which are held inposition between a shoulder and a spun-over portion as shown at 24. Thesleeve 23 is provided with a disk-shaped flange 25 which extends o verthe upper side of the bottoml wall ofthereceptacle. The sleeve 23 andthe stiifening disk 25 are fixed to the bottom wall of the recepta- 55cle by rivets 21. Drain openings 23 are provided in the bottom wall ofthe tub and the stiilening disk 25 to drain liquid which may seep intothe space between the tub and the disk 26.

The lower end of sleeve 23 is guided on the vertical sleeve I3 by aself-lubricating bearing 23 which is fixed to the inside of the sleeve23.- 'I'he upper end of the sleeve 23 is guided on shaft 23 by aself-lubricating sleeve bearing fixed in the hub formed by the upper endof the sleeve. The lower end of the sleeve bearing 30 bears on ahardened steel thrust collar 3l which is supported on and positioned bya shoulder on shaft 20. The thrust collar is prevented from turning onthe shaft by pin 32. 'Ihe weight of the receptacle is transmitted to thethrust collar by the bearing 30 and through the shoulder to shaft 20.The lower end of the thrust collar projects within the upper end of thesleeve I0, but is spaced therefrom so`that the weight of the tub is notcarried by the sleeve l0. By this arrangement, the receptacle issupported by the shaft 20 and is free to rotate relative to the shaftand relative to the vertical sleeve I3. By using the sleeve bearing 33to support the receptacle on the shaft, the weight of the receptacle canbe transmitted through the shaft to an easily lubricated thrust bearingAat the lower end of the shaft. This construction eliminates thenecessity for the thrust b earing between the receptacle and the upperend of sleeve I3 which would be difdcult to lubricate and would presentcorrosion problems in the humid atmosphere present at this point. Duringwashing, when the shaft 23 is oscillated, the receptacle remainssubstantially stationary due to inertia, and the' bearing loss in thebearing 33 is negligible. If the receptacle were supported on the sleevel0 during washing, a complicated lifting device would be necessary tolift the receptacle from the sleeve during extracting.- By continuouslysupporting the receptacle on the shaft, this lifting device iseliminated. The sleeve bearing 33 is located above the normal waterlevel in the receptacle 22 and there is accordingly no leakage of liquidaround the vshaft 20./ The receptacle may be lifted from the shaft 23and sleeve lli when the inside of the stationary tub 1 is to be cleaned.

The shaft 20 projects beyond the upper end of sleeve 23 on thereceptacle, and the projecting end is provided with splines 33 intowhich fit complementary splines in a bushing 34 fixed in the upperend'of an agitator 35. A disk 35 is fixed in the upper end of bushing 34and transmits the weight of the agitator to the upper end of the shaft20. A cup 35a is snapped'in place over the upper end of the agitator.The agitator has a tubular body portion 31 which extends downwardlyaround the sleeve 23 and terminates in a disk-shaped portion 33 adjacentthe bottom of the tub. Three vanes 39 project outwardly from the tubularportion 31 and upwardly from the disk-shaped portion 33. These vanesagitate the liquid and material contained in the receptacle 22 in orderto effect the washing operation. The'agitator is guided on the sleeve 23by a bearingl40 which is fixed to theinside of the tubular portion 31 ofthe agitator and which bears on the outside of the sleeve 23. Theagitator is removable by lifting from the end of the shaft 20. Since the-agitator is fixed to the shaft 20. by the splines 33, the agitatorfollows the movement of the shaft 20.

At the outer edge of the disk-shapedvportion 33 of the agitator is adownturned flange 4| on the inside of which is secured a brake band 42vhaving an inturned flange 43 at the lower edge. A brake shoe 44 issupported by the flange 43 and is urged against the brake band by acompression spring 45 between the adjacent ends of this oscillation, theprojection 46 may engage the rubber block 41 and move the tub. The slipclutch which is provided by the brake shoe 44 relieves the impact.During the normal oscillation of the agitator, the projection 43 doesnot engage the block 41, and the receptacle therefore remainssubstantially stationary.

'I'he receptacle is rotatedto extract liquid from the material containedtherein by rotating the shaft 23. This causes the projection 46, whichis carried by the agitator to 'engage the block 41 and'thereby tocomplete a coupling between the agitator and the receptacle which causesthe receptacle to be rotated.

The receptacle is provided with outwardly flaring side walls 22a. Belowthe upper end of the side walls is secured an inwardly projectingannular guard ring 43 which is provided with holes 50. At the inner edgeof the guard ring is a vertical flange 5I which is provided with holesl52. During the washing operation, the liquid is continuously introducedinto the tub through a pipe 53, and the excess liquid ows over the upperedge of the tub. The guard ring 43 keeps the clothes within the tubduring the washing 'and extracting operations. vDuring extracting, theliquid iiows up the flared side walls 22a and out over the upper edge ofthe receptacle. The

liquid. which overflows from the receptacle 22- during washing isreturned to the tub by a pump 54, the inlet of which is connected to anopening in the bottom wall of the stationary tube 1 (not shown), and theoutlet of which is connected to a vertical pipe which extends up theoutside of the outer casing and is secured thereto by a bracket 55a (seeFig. 3). One end of the pipe 53 is slidable within the pipe 55. Leakagearound the pipe 53 is prevented by a seal 56 arranged between the upperend of the pipe 55 and the pipe 53.

-The upper end of the stationary tub is partially closed by.an annularcover 51 which extends inwardly over the upper edge of the receptacle22. The cover is ,provided with a flange 53 which fits within the upperedge of the stationary tub. A rubber gasket 59 is arranged between theflange 53 and the tub. A pin 63 which is secured to the outer casing andprojects through au opening in the flange 53 locates the cover withreference to the tub so that it always occupies the same'relatlveposition. A removable cover 3I rests on the inner edge' ofthe annularcover 51 and completes the closing of the machine. Fixed to this coverand projecting beyond the edge thereof is a projection Gla carrying apin SIb on the under side which fits in a hole' in the cover 51 andlocates the cover 6| on the cover 51. This is shown in Figs. 3- and 5.

The cover 3l is provided with an opening 62` through which the'pipe 53projects when .it is discharging liquid into the rotatable tub 22.

Power is transmitted to the lower end of vertical shaft 23 through auniversal joint which combetween the pins 68. Bushings 61 are arrangedaround each of the pins. Plates 68 arranged'on the upper and lower sidesof the bushings 61 and each having. four equally spaced depressions inwhich the bushings t, are clamped together to complete the assembly ofthe universal joint. 'I'his universal joint permits tilting of the shaft28 when rotating in an unbalanced condition. The drum 66 is keyed to avertical shaft 69. The shaft 69 is journaled in a sleeve bearing 18carried inthe upper wall of a gear casing 1|. The oil which is carried.past bearing 18 is returned to the gear casing by a tube 18a. The lowerend of the shaft 69 is carried in a bearing 13 mounted in a bridge 13a.The vertical load is carried by lthrust bearing 12 also supported inbridge 13a. The bridge 13a is dowelled into position on gear case 1|`and allows the entire mechanism to be assembled and operated with thegear case cover plate 1|a removed. The entire weight of the receptacle`22 and the contents thereof, which is supported on the shaft 28, iscarried on the thrust bearing 12. The gear casing is supported from -thelower-end o sleeve 6 andv is also braced by a bracket 14 secured to theunder side of the inverted so that it rests on` the upper rim of theouter casing, and the gear case cover 1|a is re- Y moved. In thisposition'all the gearing is accessible, and since the gearing is carriedwholly by the gear case, it may be operated and tested with the coverremoved. While in this position, none of the lubricant can leak from thegear casing since the end of the tube 18a is above the level of thelubricant. In factthe location of the tube 18a is sucn that lubricantcannot leak therefrom in any position of the gear case.

The power for driving the washing machine is obtained from an electricmotor which is suitably supported on the under side of the base in amanner not shown. The motor is provided with a belt drive 16 to a pulley11 rotatable on a horizontal drive shaft 18. A suitable centrifugalclutch vv19 completes the driving connection between the pulley 11 andthe drive shaft 18 at a predetermined speed. Thedrive shaft 18 carries ahelical gear 88 which Imeshes with a gear 8| rotatably carried on thevertical shaft 69. The drive shaft 18 also carries a worm 82 whichmeshes with a worm gear 83 rotatably carried on apin 84 supported fromthe vupper wall of the gear casing. Depending from the gear 83 is acrank pin 85 at the lower endof which is fixed one end of a rack 86. Thecrank pin 85 is rotatable in gear 83. The rack is provided with teeth 81which are adapted to engage a pinion 88 xed to the lower end of shaft69. The body portion of the rack is offset, as shown in Figs. 1 and 3,so that the teeth of the rack are in line with the bearing of the cranklpin inthe gear 83.

The rack is carried in a guiding bracket 89 which is pivoted on a pin 98secured to a boss 98a depending from the upper wallof the gear casing.The guiding bracket has anges 9| which extend over the upper andlowesides of the rack. A roll 92 is journaled between the flanges 9| ona sleeve 93 which is held in place by a pin 94. This roll engages therear side of the rack and holds the teeth of the rack in engagement withthe pinion 88. The upper ange of the guiding bracket is provided with adepending pm si which fits within a longitudinal slot 96 in the uppersurface of therack. When the guiding bracket' is` pivotedv in acounter-clockwise direction, as viewed in Fig. 3, this pin moves therack out of engagement with the pinion 88.

The position of the guiding bracket is adjusted by adjusting plate 91which is arranged above the upper ange 9| of the guiding bracket. Theadjusting plate is provided .with an elongated slot 98 which fits overthe pin 9 8 on which the guiding bracket is pivoted. The adjusting plateis casing and an ear |82 on the adjusting plate.l

The cam slot 99 is formed so'that when the adjusting plate 91 is movedto the right, as viewed in Fig. 3, the guiding bracket 89 is p ivoted ina counter-clockwise direction about the pin 98, and

the rack is moved out of engagement with the pinion 88.

The `arrangement illustrated for moving the adl justing plate comprisesa roller |88 which is rotatably` carried on the upper surface of the ad-A justing plate and which is engaged'bya cam |84.

Cam |84 is keyed to a vertical cam shaft |85 which is rotatably carriedin a boss |86 depending from the upper wall of the gear casing. 'A plate|86a (see Figs. 7 and 8) keyed to the lower end of cam shaft |85supports the adjusting plate 91. In Fig. 3, the adjusting plate is shownin the position in which the rack engages the pinion 88. When the cam|86tis rotated in a counter-clockwise direction, the adjusting plate ismoved to the right thereby causing the rack to be moved out ofengagement with the pinion 88. During this movement, the spring holdsthe adjusting plate against the end of screw |88. The rack isreciprocated continuously during the rotation of the driving shaft 18,but the shaft 69 and the shaft 28, which is driven thereby, areoscillated only when the rackengages the pinion 88.

The gear 8|, which is continuously driven by the drive shaft 18 iscoupled to the shaft 69 'by a clutch which comprises a flanged collar|81 which is splined to the shaft 69. On the lower surface of the collar|81 are teeth |88 which are adapted to iit between teeth |89 on theupper surface of gear 8| and thereby couple the gear 8| to the shaft 69.The movement of clutch collar |81 is controlled by a bellcranklever |8which is pivotallycarried on a pin I|| .supported by a bracket ||2 (seeFig. '1) from the upper wall of the gear casing. The upper arm of thebell crankis prvided with pins H3 which t' crank carries a stud. Illawhich is held against a clutch-operating cam ||5 by a lspring ||6. 'I'hespring H6 biases the bell crank in the direction to move the clutchycollar into engagement with the teeth on the upper surface of gear 8|.In Fig. 3, they clutch-operating cam ||5 is shown in the position inwhich the clutch eollar |81 is held out of engagement with the teeth onthe'gear 8|. `When the cluthfoperating cam is moved to the positionVshown in Fig. 17, the spring ||6 moves 'the' clutch collar intoengagerment with the teeth on gear 8l and thereby couples the gear 8| tothe shaft 69, This completes a driving connection from thedrivefshafV-t-through the shaft 69 to the shaft 20 so that the shaft 20can be rotated.

At the conclusion of the extracting operation, the receptacle and theshaft 20 are being rotated at high speed. In Figs.` to 13, inclusive, Ihave showny a braking arrangement for quickly bringing the receptacle toa stop at the conclusion of theextracting operation. This arrangementcomprises a. brake shoe ||1 which is carried on a brake arm ||8 pivotedon pin ||9 on the lower end of sleeve 8. Thebrake shoe is provided withflanges which extend on either side of the brake arm H8. A pin |2| isfastened-between the flanges |20 and fits in an open ended slot |22 inthe brake arm. The pin |`2| is held against the bottom of the slot by aprestressed spring |23 arranged between a cup |24 -and a cup |25. (seeFig. 1) which extend on either side of the brake arm I8 and between theflanges |20 on the brake shoe and are pivoted on the pin |2|. The

' brake shoe is maintained centered with 'respect to the slot |22 by aspring |21 arranged between a bracket |28 on the sleeve 8 and a pin |29on the brake shoe. This spring maintains the outer surface of the brakeshoe against the brake arm when the brake is in the position shown inFig.'

10. The spring |21 also biases the brake arm ||8 in a clockwisedirection, as viewed in Fig. 10. 'I'he position of the brake arm ||8 iscontrolled by a lever |30 which is pivoted on pin |3| on the sleeve 8and which carries a pin |32 at the other end which bears on a brakecontrol cam" |33. A spring |34 arranged between a pin |35 on lever |30and a boss |36 on brakearm ||8 normally holds the lever |30 againstboss|36.

When the parts are in the posi-tion shown 'in Fig. 1 0, the brakecontrol cam |33 maintains the .brake arm in the position shown in Fig.10 in which the brake does not touch the brake drinn 66. To apply thebrake, the cam shaft |05 is moved to the position shown in Figs. 11 and16 in which the pin |32 is opposite a slot |31 in the brake control cam.When the parts are in this position, the 4spring |21 moves the brake arm||8 in a clockwise direction so that the surface of the brake shoe. isbrought into contact with the surface of the brake drum. The frictionaltorque exerted by the brake drum on the brake shoe acts through thebrake shoe to the brake arm and moves thebrake arm to the posiy tionshown in Fig. 12. In this position the brake shoe is wedged against thesurface of the brake drum and is moved to the right in. slot |22 againstthe force of prestressed spring |23. The spring |23 therefore controlsthe braking'pressure which is exerted between the brake shoe and thebrake drum. A stop |38 on the sleeve 8 limits the ro- 69 as the pin |9on which the brake arm is piv- -`oted. When the parts are in theposition shown in Fig. 12, the pin |32 is held within the slot |31 inthe brake control camr and prevents further rotation of the cam shaftI|05 While the parts are in this position. In other words, the entirecontrol mechanism is locked in position until the brake drum comes torest.

The cup |25 has spaced flanges |26l The rotation of the cam shaft iscontrolled by a rod |39 which is journaled at its upper end in a dialplate |40 fixed tothe upperend of station'ary` tub and at the lower endin a casing |4| supported by a bracket |42 from the side wall 2,01' thebase. The upper end of the control rod |39 has an onset portion |43which provides a handle for rotating the rod. Fixed to the lower end ofthe control rod |30 within housing |4| is "a gear |44 which drives asegmental gear through an intermediate gear |46. The segmental gear |45is connected to one end of a lever |41 which is pivotally carried on apin |48 in a. bracket |49 supported from the upper wall of the base, asshown in Fig. 7. 'I'he other end of lever |41 is provided with asegmental gear |50 which meshes with a pinion |5| which is keyed to thecam shaft |05 between guide plates |5|a. 'I'he lower guide plate |5|a isprovided with spaced holes |5|b which are engaged by a spring pressedball |5|a. This provides a detent for holding the cam shaft in theposition to 'which it is moved. When the control rod |39 is rotated in aclockwise direction, the cam shaft |05 is rotated in a counter-clockwisedirection. At the lower end of the operating rod is a cam |52 whichengages the operating plunger |53 of a motor control switch |54. Theswitch is normally biased to the closed position and is opened bypushing the rod toward the switch. The switch is placed in one of theconductors |54a which supply power to the driving motor. The cam surfaceon Ithe cam |52 is arranged so that the motor is energized when the rodis in the washing and pumping positions shown in Fig. 3, and isdeenergized when the rod is in the off position. When the operating rodis moved to the drying position shown in Fig. 3, the rod is lifted sothat the handle |43 can t in the notch 6|c'in projection 8|a.Thismovement lifts the cam |52 so that the depression |55 in the cam isopposite theplunger |53, thereby permitting the motor switch to beclosed. If the operating rod is not lifted, the motor switch is heldopen by the cam |52. When the operating rod is moved from the dryingposition, it is returned lto the lowered position shown in Fig. 3 by aspring |58 arranged between the upper side of gear |44v and the upperend of casing |4|.

Down-ward movement of the operating rod |39 is limited by a. collar |51which is pinned to the operating rod and which engages the top of thehousing |4|.

The pump 54 is driven from the drive shaft 18 through a collar |58having an ear |59 which engages one of Ithe pins |80 on the rotatablepart of centrifugal clutch 19. 'Ihe collar |58 is splined on the pumpshaft |6| and is spring biased toward .the connecting position. 'I'hecollar |58 is moved from this position by a lever |62 having forked arms|63 which fit over the collar |58 and engage a ange |84 on the collar.The upper end of lever |82 is fixed to a rock shaft |65 which is carriedon the under side of the base in a bracket |66.y A strip |81, which isfixed to the rock shaft, bears on the under side of a plate |68 carriedby the base and provides a stop for lever |62, so positioning it that itis out of contact with flange |84 when the pump is running. The rear endof the rock shaft terminates in a crank arm |69, which is connected byrod |10 to one end of a. lever |1|. The lever 1| is pivoted intermediateits ends on a pin |12 carried on the under side of the base.

The front' end of lever |1I carries a pin |12a which ilts in a slot |13in lever |41. The pin 12a is biased against the right hand edge of slot|13 by a tension spring |14- connected to the rear end of lever |1|.When the parts are in the position shown in Fig. 3, the pin |12a is inthe enlarged portion |15 oi slot |13 and, in this position, the pump isdriven lby the drive shaft 18. When the control rod is moved to the offor to the dry" positions on dial |40, the pin |12a enters the narrowportion of slot |13 and in this position the lever |62 is rotated in acounter-clockwise direction by the rod |10 and moves the collar |58 awayfrom the connecting position. In this position, the pump remainsstationary.

In the use of the washing machine, the handle |43 on the control rod |39is moved to the position marked pump on the dial |40. In this position,the switchl |54 is closed energizing the driving motor and the pin |12aon lever |1| is in the enlarged portion |15 of slot |13, as shown inFig. 3 so the pump is rotated by the drive shaft 18. Water isnextintroduced into the rtatable receptacle 22 until water is pumpedfrom the lower -part of stationary tub 1 through the the rack. operatingcam |04 permits the 'adjusting plate 91 to be moved to the left, asviewed in Fig. 3, by spring and the cam slot 99 inthe adjusting plateco-operates with the pin 94 on the guiding bracket 89 to move the rackinto engagement with pinion 88. 'I'his causes the shaftl 20 and theagitator connected thereto to be oscillated to effect working of -theclothes.l

At the start of this oscillation, .the projection 46 on the under sideof the agitator may engage the block 41 on the bottom-wall of thereceptacle. Sincel the projection 46 is carried by the brake shoe 44,the impact will cause the brake shoe to slip relative to the agitatorand the receptacle will not receive the full force of the impact. 'Ihisimpact will cause the receptacle to move to a position in which theprojection 46 no longer engages the block 41, and the receptacle willremain, in this position and substantially stationary y throughout theoscillation of the agitator. Since the pump is running continuouslyduring the washing operation, an excess of liquid is being introducedinto the receptacle from stationary tub'1.

When the 'clothes vare clean, the handle |43 is movedin a clockwisedirection from the position shown in Fig. 3 through the pump and ofipositions to the position marked "dry" on the projection 6|a. When thehandle reaches the position marked pump on the dial |40, the rackcontrol cam |04 is moved to the position shown in Fig. 15. In thisposition, the cam engages the roller |03 on the Aadjusting plate 91 andmoves the adjusting plate totheright, as viewed in Fig. 3. This causesthe guiding bracket 69 to be pivoted in a counter-clockwise direction,thereby moving the rack out of engagement with the pinion 88. At thistime, the oscillation of the agitator ceases although the rack cwrtinuesits reciprocation. When the handle reaches the oil position, the cam |52at the lower end of the operating rod opens the switch |54 anddeenergizes the motor and the pump is disconnected from shaft 18. Justafter the handle passes the ofi position, the lclutch control cam ||5 ismoved to a position in which the bell crank ||0 moves the clutch collar|01 into engagement with the gear 8| under the action o1 spring 6. Sincethe motor is deenergized, the drive shaft' 18 is stationary at this timeand there is Vno danger of injuring the clutchV by this operation.During the latterpart of the movement or the handle from the ofiposition to the dry position, the-handle is lifted into notch 6 Ic, andwhen the handle reaches the dry position, the operating plunger |53 ofmotor switch |54 rests in depression |55 of cam |52, closing switch |54and energizing the motor. As soon as the motor reachesla predeterminedspeed, the centrifugal clutch 19 completes the driving vconnectionbetween the motor and drive shaft 16, and the vertical shaft 2'0 isrotated.v

During this movement, the projection 46 on the under sige of theagitator engages the block 41 carried by the receptacle and causes thereceptacle to be rotated.- When the shaft 20 reaches a speed of about100 R. P. M., there-is a critical i vibration of the shaft about theresilient mounting provided by rubber rings and I4. There is no othercritical vibration of the shaft between this'speed and 1150 R. P. M.which is the normal running speed. During the rotation of receptacle,the liquid in the clothes is thrown by centrifugal force to thesidewalls of the receptacle and ows over the upper edge of thereceptacle. The annular guard ring 49 keeps the clothes within thereceptacle during .this extracting operation. The liquid which isdischarged from the receptacle is collected in the bottom part ofstationary tub 1 and remains there since the pump is not running.

When the clothes have been suicientlydried, thehandle |43 is moved in acounter-clockwise direction to the oil position, thereby deenergizingthe motor and disconnecting the clutch collar I 01 from the gear 8|.When the handle reaches this position, the brake cam |33 is in theposition shown in Figs. 1l and 16 in which pin |32 is opposite slot |31in the cam. When the cam reaches this position, the brake shoe ||1 ismoved to the position shown in Fig. 11 by the spring |21. 'Ihe brakedrum 66 which is connected to the shaft 20 is now rotating at about 1150R. P. M., in the-direction indicated by the arrow in Fig. 11. Thefrictional torque exerted by the brake drum on the brake shoe vmovesthev brake shoe in a clockwise direction to the position shown in Fig.12. In this position, the brake shoe is held against the surface of thebrake drum by the-prestressed spring |23. This spring exerts a largeforce on the brake shoe so that the braking force exerted on the brakedrum quickly brings the tub to rest. While the brake shoe is in theposition shown in Fig. 12,`the pin |32 on lever |30 is held within theslot |31.' 'I'his holds the cam shaft in this position and preventsmovement of the operating rod |39. It is, therefore,

'not possible to move the control rod to either the agitator wereoscillated while'the tub was rotating. The brake remains in the positionshown in Fig, 12 until the rotation of the tub stops. At this time, thefrictional torque exerted on the brake shoe decreases to zero, and thespring |23 returns the brake shoe to the position shown in Fig. 11.Duringthe return movement, the spring |34 moves the arm |30 so that thepin |32 is moved clear' oi' slot |31.

The clothes are now dried and may be removed. If the washing solution inthe bottom of tub 1 is to be re-used, the handle I 43 is moved to thepumping position, and the solution is pumped through pipes 55 and 53 tothe tub 22. Another batch of clothing may now be put in the tub 22, andthe washing and extracting operations described above may be repeated.If the washing solution in the tub is not to be used again, the pipe 53is pivoted in the pipe 55 so that it discharges` to a drain and thesolution is pumped to the drain.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is: 1. In a washing machine, a rotatable receptacle, drivingmeans for rotating said receptacle to extract liquid from the materialcontained therein, means including a brake for .retarding the rotationof said receptacle, and means controlled by said brake means forpreventing rotation of said receptacle by said driving means untilrotation of said receptacle has substantially stopped.

2. In a washing machine, a rotatable receptacle, driving means forrotating said receptacle to extract liquid from the material containedtherein, means including a brake for retarding the rotation ofsaidreceptacle, a control lever for controlling said driving means and saidbrake means, and means controlled by said brake means for holding saidlcontrol lever in the braking position until rotation of said receptaclehas substantially stopped.

3. In a washing machine, a rotatable receptacle, an agitator in saidreceptacle, driving means for rotating said receptacle to extract liquidfrom the material contained therein and for oscillating said agitator insaid receptacle for washing, means including a brake for retarding therotation of said receptacle, and means controlled by said brake meansfor preventing rotation .of said receptacle or oscillation of saidagitator by said driving means until rotation of said receptacle hassubstantially stopped.

4. In a washing machine, a rotatable receptacle, driving means forrotating said receptacle to extract liquid from the material containedtherein, means including abrake for retarding the rotation of saidreceptacle, and means controlled by the frictional .torque on said brakemeans for preventing rotation of said receptacle by said driving meansuntil rotation of said receptacle has substantially stopped.

5. In a washing machine, a rotatable receptacle, driving means forrotating said receptacle to extract liquid from the material containedtherein, an agitator in said receptacle, means for oscillating saidagitatqr 'in said receptacle for washing, means including a brake forretarding the rotation of said receptacle, and means controlled by thefrictional torque on said brakeY means for preventing oscillation ofsaid agitator bysaid oscillating means until rotation of said receptaclehas substantially stopped.

6. In a Washing machine, a rotatable receptacle, means for rotating saidreceptacle to extract liquid from the material contained therein,

means including a brake drum for retarding the rotation of saidreceptacle, a brake arm carrying a brake shoe, means moving said brakearm for initially moving said brake shoe'into contact with the brakingsurface of said drum, means utilizing the torque due to the frictionalforce exerted on said brake shoe by said brake drum for further movingsaid brake shoe against said brake drum, and spring means for resistingthis further movement of the brake shoe and for returning said brakeshoe to the initial position when the frictional torque decreases to apredetermined value.

7. 'In a washing machine, a rotatable receptacle, means for rotatingsaid receptacle to extract liquid from the material contained therein,means including a brake drum for retarding the rotation of saidreceptacle, a brake shoe, movably mounted carrying means for said brakeshoe arranged to permit movement of said brake shoe away from thebraking surface of said drum, said carrying means being movable by thefrictional torque exerted on said brake shoe by said drum and arrangedto Wedge said brake shoe against the braking surface of said drum bythis movement, means including a spring for resisting the movement ofsaid brake shoe away from the braking surface of said drum and forlimiting the pressure between said brake shoe and said brake drum, meansfor moving said carrying means to relieve the brakeA pressure when thefriction torque decreases to a predetermined value, and means for movingsaid brake shoe into contact with the braking surface of said drum forinitiating the braking action.

8. In a washing machine, a rotatable receptacle, means for rotating saidreceptacle to extract liquid from the material contained therein, meansincluding a brake drum for retarding the rotation of said receptacle, abrake shoe, carrying means for said brake shoe movable by the frictionaltorque exerted on said brake shoe to wedge said brake shoe against thebraking surface of said drum, means including a spring for limiting thepressure between said brake shoe and said brake drum and for moving saidbrake shoe to release the brake pressure when the friction torquedecreases to a predetermined value, and means for moving said brake shoeinto contact with said brake drum for initiating the brake action.

9. In a washing machine, a rotatable receptacle, means for rotating saidreceptacle to extract liquid from the material contained therein, meansincluding a brake drum for retarding the rotation of said receptacle, abrake shoe, a pivoted brake arm for'carrying said brake shoe, said brakearm being movable by the frictional torque exerted on said brake shoe ina direction to Wedge said brake shoe against the braking surface of saidbrake drum, said brake shoe being 'movable relative to said brake armaway from the braking surface of said drum, a spring for limiting thepressure between said brake shoe and said drum and for moving said brakearm in the direction to relieve the braking pressure when the frictionaltorque decreases to a predetermined value, means including a cam formoving said brake arm to a position in which said brake shoe is incontact with the braking surface of said brake drum, and means forpreventing further movement of said cam until the frictional torquel onsaidbrake shoe decreases to a predetermined Value.

10. In a washing machine, a rotatable recep-4 tacle,'a Vertical shaftfor rotating saidreceptacle to extract liquid from the materialycontained therein, a brake drum connected to said shaft, a sleevesurrounding said drum, a gear casing carried by said sleeve havinggearing therein for rotating said shaft, a brake adapted to engage saiddrum and carried by said sleeve for retarding the rotation of saidreceptacle, and a cam shaft carried by said gear casing for controllingsaid brake and said gearing.

11. In a washing machine, a receptacle for receiving liquid and materialto be washed, an agitator in said receptacle, a gear casing havingdriving means therein for rotating said receptacle to extract liquidfrom the material contained therein and for moving said agitatorrelative to said tub for washing, braking means for retarding therotation of said receptacle, and means including a cam shaft carried bysaid casing for controlling said driving and braking means.

12. In a washing machine, a rotatable receptacle, driving means forrotating said receptacle to extr-act liquid from the material containedtherein, means including a brake for vretarding the rotation of saidreceptacle, a control lever for controlling said driving means and saidbrake means, and means responsive to the braking force exerted by saidbrake means for holding said control lever in the braking position untilrotation of the receptacle has substantially stopped.

13. In a washing machine, a rotatable receptacle, driving means forrotating said receptacle to extract liquid from the material containedtherein, means lincluding a brake for retarding the rotation of saidreceptacle, a controll lever for controlling'said driving means and saidbrake means, and means responsive to the braking force exerted by'saidbrake means for preventing controlling of said driving means untilrotation of said receptacle is substantially stopped.

14. In a washing machine, a rotatable receptacle, means for rotating thereceptacle to extract liquid from the material contained therein, meansincluding a brake drum for retarding the rotation of said receptacle, abrake arm carrying a brake shoe, means moving said brake arm for movingsaid brake shoe into cont-act with the brakingv surface of said drum,and means utilizing the torque due to the frictional lforce exerted onsaid brake shoe by said brake drum for locking said brake arm in thebraking position until the frictional torque decreases to a predefrotation of said receptacle, a brake arm carrying termined value.

15. In a washing machine, a rotatable receptacle, means for rotatingsaid receptacle to extract liquid from the material contained therein.means including a brake drum for retarding the a brake shoe, a camco-operating with 'said brake arm to move the brake shoe into contactwith the braking surface of said drum, said cam and said brake armhaving co-operating parts for locking the brake arm in the brakingposition, and means for utilizing the torque'v due to the frictionalforce exerted on said brake shoe by said brake drum-for -eiectingengagement of said co-operating parts to lock said brake arm in thebraking position.

16. In a washing machine, a rotatable receptacle, driving means forrotating the receptacle to extract 'liquid from the material containedtherein, means including a brake drum for re-- tarding the rotation ofthe receptacle, a brake shoe. means for moving said brake shoe intocontact with the braking surface of said drum.

cam means for controlling said braking and said driving means, and meansutilizing the frictional force exerted on said brake shoe by said brakedrum for opposing movement of said cam means to control said drivingmeans until the frictional force decreases to a predetermined value.

17. In awashing machine, a rotatable' receptacle, a gear casing having avertical shaft car- .ried therein and having gearing therein forrotating said shaft, means including said shaft for rotating saidreceptacle to extract liquid from ing, means including said gearing forrotating said receptacle to extract liquid from the material containedtherein, braking means carried by said casing for retarding the rotationof the receptacle, and means including a cam shaft carried by the gearcasing for controlling said gearlng `and said braking means.

19. In a Washing machine, a rotatable receptacle, driving means forrotating said receptacle to extract liquid from the material containedtherein. means including a brake for retarding the rotation of saidreceptacle, and means controlled by said brake means for opposingrotation of said receptacle by said driving means-during the high speedrotation of the receptacle.

20. In a washing machine, a rotatable recepi tacle, driving means forrotating said receptacle to extract liquid from the material containedtherein, means including a brake for retarding the rotation of saidreceptacle, a control lever for controlling said driving means, andmeans controlled by said brake means for holding said control lever inthe braking position until rotation of said receptacle hassubstantially-stopped.

21. In a washing machine, a rotatable receptacle for receiving liquidand material to be washed, mechanism for effecting washing in Athereceptacle and for rotating the receptacle at high speed to extractliquid from the material contained therein, brake means for retardingthe rotation of the receptacle, and means controlled by said brake meansfor opposing operation of said mechanism during the high speed rotationof the receptacle.`

22. In a washing machine, a rotatable receptacle for receiving liquidand material to be Washed, mechanism for effecting Washing in thereceptacle and for rotating the receptacle at high speed to extractliquid from the material contained therein, brake means for retardingthe rotation of the receptacle, and means controlled by the frictionaltorque on said brake means for opposing operation of said mechanismduring the high speed rotation of the receptacle. l23. In a washingmachine, a rotatable recep-v tacle, driving means for rotating saidreceptacle to extract liquid from the material contained therein, anagitator in said receptacle, means for moving the agitator relative tothe receptacle for washing, means including a brake for retarding therotation of said receptacle, and means controlled by the frictionaltorque on said brake means for opposing operation of the agitator duringrotation of the receptacle.

24. In a Washing machine, a rotatable receptacle, means for rotatingsaid receptacle to extract liquid from the material contained therein,means including a brake drum for lretarding the rotation of saidreceptacle, a brake shoe, carrying means for said brake shoe movable bythe frictional torquefexerted on said brake shoe to wedge said brakeshoe against the braking surface of said'drum,spring means opposing themovement of brake shoe carrying means by the frictional torque, andmeans for moving said brake shoe into contact with said brake drum forinitiating -the brake action.

25. In a washing machine, a rotatable receptacle, means for rotatingsaid receptacle to extract liquid from the material contained therein,means including a brake drum for retarding the rotation of saidreceptacle, a brake shoe, a pivoted brake arm for carrying said brakeshoe, said brake arm being movable by the frictional torque exerted onsaid brake shoe in a direction to wedge said brake shoe against thebraking surface of said brake drum, said brake shoe being movablerelative to said brake arm away from the braking surface of said drum,and a spring for limiting the pressure between said brake shoe and saiddrum and for moving said brake arm in the direction to relieve thebraking pressure when the frictional torque decreases to a predeterminedvalue 26. In a washing machine, a rotatable receptacle, driving meansfor effecting washing in the receptacle and for rotating the receptacleto extract liquid from the material contained therein, means including abrake drum for retarding the rotation of the receptacle, a brake shoe,means for moving said brake shoe into contact with the braking surfaceof said drum, cam means for controlling said braking and said drivingmeans, and `means utilizing the frictional force exerted on said brakeshoe by said brake drum-for opposing movement of said cam means tocontrol said driving means until the frictional force decreases to apredetermined value.

27. In a Washing machine, a receptacle for receiving liquid and materialto be washed, an agitator in said receptacle, a gear casing havinggearing therein, means including said gearing effecting washing in thereceptacle and for rotating said receptacle to extract liquid from thematerial contained therein, braking means carried by said casingfor-retarding the rotation of the receptacle, and means including a camshaft carried by the gear casing for controlling said gearing and saidbraking means.

28. In a combined washing and drying machine, a rotatable receptacle forreceiving material to be washed, a washing element therein, a shaftextending along the axis of the receptacle having driving connections tothe Washing element and receptacle whereby upon rotation of the shaft athigh speed the receptacle is rotated for extracting and upon rotation ofthe shaft at a lower speed the washing element is operated for washing,driving mechanism for operating the ,shaft at washing and extractingspeeds, means including a brake for retarding the rotation of saidreceptacle at the conclusion of the extracting operation, and meanscontrolled by said brake means for preventing operation of said shaft atits washing speed by said driving mechanism until said rotation of thereceptacle has substantially stopped.

29. In a combined washing and drying mathe shaft at high speed thereceptacle is rotated for extracting and upon rotation of the shaft.v

at a lower speed the washing element is operated for washing, drivingmechanism for operating the shaft at washing and extracting speeds,means including a brake for retarding the rotation of said receptacleat'the conclusion of .the extracting operation, and means controlled bythe frictional torque on said brake for preventing operation of saidshaft at its washing speed bysaid driving mechanism until said rotationof the receptacle' has substantially stopped.

30. In a combined washing and drying machine, a shaft, a rotatablereceptacle for receiving material to be washed surrounding the shaft, awashing element in the receptacle connected to the shaft, drivingmechanism for selectively oscillating the shaft at a low speed androtating the shaft at a high speed, a driving connection from the shaftto the receptacle effective during rotation of the shaft to rotate therecepacle for extracting, a brake acting on the shaft for retardingrotation of the receptacle at the conclusion of the extractingoperation, and means controlled by said brake for preventing oscillationof the shaft by said driving mechanism until rotation of the receptaclehas substantially stopped. v

31. In a washing machine, a vertical shaft, a receptacle for receivingliquid and material to be washed having a hub rotatably surrounding theupper end of the shaft, a Washing element in the receptacle movablerelative thereto, a thrust bearing between the receptacle hub and theshaft for supporting the receptacle on the shaft, a guide bearing forthe receptacle, said bearings journaling the receptacle in rotatablerelation to the shaft and being spaced apart sufficiently to preventtipping of the receptacle, a driving connection between the washingelement and the receptacle by rotation of the shaft relative to thereceptacle to agitate the liquid and material therein for washing, adriving connection between the shaft and the receptacle for rotating thereceptacle for extracting, and means resiliently supporting the shaftfor gyratory movement about its lower end whereby the receptacle mayrotate about its center of mass during extracting.

32. In a combined washing and drying machine, a receptacle for receivingliquid and material to be washed adapted for rotation on a verticalaxis'to centrifugally extract liquid from the material containedtherein, a casing serving as a storage tank having suilicient spacebelow the receptacle during extracting to store the liquid contents ofthe receptacle, an agitator in the receptacle, a vertical agitator shaftfor operating the agitator to agitate the liquid and material forwashing, a thrust bearing between the agitator shaft and the receptaclefor supporting the receptacle on the shaft, a guide bearing for thereceptacle, said bearings journaling the re- .ceptacle in rotatablerelation to the shaft and being spaced apart sufficiently to preventtipping o! the receptacle, a driving connection between for resilientlysupporting the agitator shaft and receptacle for gyratory movementrelative to the driving mechanism and to the casing whereby thereceptacle mu rotate about its center oi' mass during extracting. v

GEORGE W. DUNEAM.

